Egbert p



. (No Model.)

- P. LAMONT & E. D. BRONNER.

ROOF. No. 448,244. I Patented Mar. 17, 1891.

Flc l I Z A 5 v WITNESSES JWY EWTOYE Q W jfxi pending web or flange bROBERT P. LAMONT AND EDMOND D. BRONNER, OF DETROIT, MICHIGAN.

ROOF.

SPECIFICATION forming part of Letters Patent No. 448,244, dated March17, 1891.

Application filed September 20,1890. $erial No. 365,592. (No model.)

To aZZ whom it may concern.- 7

Be it known that we, ROBERT P. LAMONT and EDMOND D. BRONNER, citizens ofthe United States, residing at Detroit, county of YVayne, State ofMichigan, have invented a certain new and useful Improvement in Roofs;and we declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilledin the art to whichit pertains to make and use the same, reference being had to theaccompanying drawings, which form apart of this specification.

Our invention relates more particularly to the supporting and joiningtogether of the roof-plates of a car or other structure, whereby thereare no orifices or joints exposed on the uppersurface of the roof; andit consists in a combination of devices and appliances hereinafterdescribed and claimed.

In the drawings, Figure 1 is a plan view of a portion of the roof of acar, and Fig. 2 is an edge view of the same. Fig. 3 is a perspectiveview of one of the roof-plates.

In carrying out the invention, A represents one of the members or beamsof the roof to which the roofplates are directly engaged and by whichthey are sustained. These members or beams are a peculiar shape, beingsubstantially a T shape in cross-section, with the flanges a a curved orrounded downward. The plates 13 are made of sheet metal and corrugated,as at b, to strengthen them. The edge of each plate which is attached tothe cross-beam A is shaped as shown in Fig. 2, with a corrugation orridge 1) and the de- This depending web or flange is provided withbolt-orifices b 0 is a packing, of tar-rope, rubber, or the like, placedbetween the corrugation b and the flanges a a of the cross-beam, thusmaking a perfectly-tight joint.

D is a bolt passed through the depending flanges b of the two top plates13 and through the web a of the cross-beams, thus binding all threeparts together and making a joint without a bolt or bolt-orifice beingexposed on the surface of the roof. By this construction the ordinarybatten now employed to cover the joints between the plates is dispensedwith, and the peculiar form of the cross-beam not only renders thebatten unnecessary, but it cheapens and strengthens the construction,and also, as above set forth, makes a joint without a break in the uppersurface.

We do not confine ourselves to curving the flanges a as shown, forobviously they can be otherwise shaped to house the ridged and flangededges of the roof-plates.

What we claim is 1. In a metallic-roof structure, the combination, withthe roof-plates, each having a ridge or corrugation b and dependentflange 6 of the cross-beam formed with the upright web a and flanges aa, the flanges Z1 of two adjacent plates being engaged to the web a,substantially as described.

2. In a metallic-roof structure, the combination, with two adjoiningroof-plates provided at their edges with ridges or corrugations 1) anddepending flanges W, of the crossbeam for supporting and engaging saidplates, said beam having a Web a, to which the depending flanges of theplates are engaged by a through-bolt, and having also the flanges a a,which project over and cover the corrugations 1), substantially asdescribed.

3. In a roof structure, the combination of the cross-beam formed withthe upright web a and flanges a a, the roof-plates B, provided adjacentto the edge with the corrugation b and depending flange Z2 a suitablepacking O, placed between the corrugations 1) and flanges a, and a boltpassed through the flanges b and web a, for securing the parts together,substantially as described.

4. In a roof structure, the combination of a supporting membercomprising a vertical web a and overhanging flanges a with metallicroofing-plates extending under the flanges and provided at their edgeswith flanges which are attached to the web, sub stantially as described.

In testimony whereof we sign this specification in the presence of twowitnesses.

ROBERT P. LAMONT. EDMOND D. BRONNER. Witnesses:

MARION A. Rnnvn, WELLS W. Lneenrr.

